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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.language.significance.impl;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.yahoo.component.annotation.Inject;
import com.yahoo.language.Language;
import com.yahoo.language.significance.SignificanceModel;
import com.yahoo.language.significance.SignificanceModelRegistry;
import com.yahoo.search.significance.config.SignificanceConfig;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.nio.file.Path;
import java.util.EnumMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;
/**
* Default implementation of {@link SignificanceModelRegistry}.
* This implementation loads models lazily and caches them.
*
* @author MariusArhaug
*/
public class DefaultSignificanceModelRegistry implements SignificanceModelRegistry {
private final Map<Language, SignificanceModel> models;
@Inject
public DefaultSignificanceModelRegistry(SignificanceConfig cfg) {
this.models = new EnumMap<>(Language.class);
for (var model : cfg.model()) {
addModel(model.path());
}
}
public DefaultSignificanceModelRegistry(List<Path> models) {
this.models = new EnumMap<>(Language.class);
for (var path : models) {
addModel(path);
}
}
public void addModel(Path path) {
ObjectMapper objectMapper = new ObjectMapper();
try {
SignificanceModelFile file = objectMapper.readValue(path.toFile(), SignificanceModelFile.class);
for (var pair : file.languages().entrySet()) {
this.models.put(
Language.fromLanguageTag(pair.getKey()),
new DefaultSignificanceModel(pair.getValue(), file.id()));
}
} catch (IOException e) {
throw new UncheckedIOException("Failed to load model from " + path, e);
}
}
@Override
public Optional<SignificanceModel> getModel(Language language) {
if (!models.containsKey(language))
{
return Optional.empty();
}
return Optional.of(models.get(language));
}
}
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